GitHub Advisoryadvisory · PyPI

GHSA-xcgm-r5h9-7989 aiohttp: Incomplete websocket frame payloads bypass memory limits

MEDIUM Published 2026-06-15 Modified 2026-06-15 Official page ↗
Aliases
CVE-2026-54274
Ecosystem
PyPI
Packages
aiohttp
Severity
Moderate
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U
Weaknesses
CWE-770
Reviewed
2026-06-15

Affected packages

• PyPI aiohttp: < 3.14.1 → fixed in 3.14.1

Description

Summary If an attacker sends large incomplete websocket frame payloads, it may be possible to bypass the usual size limits on memory use. Impact If a web application has WebSocket endpoints, it may be possible for an attacker to execute a DoS attack through excessive memory use. ----- Patch: https://github.com/aio-libs/aiohttp/commit/14b6ee851fb16ec199acb950de0c82d476799e7d

Related

Alias · CVE (1)

  • CVE-2026-54274 AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. vulnerability

Weakness · CWE (1)

  • CWE-770 Allocation of Resources Without Limits or Throttling weakness

References